APA (7th ed.) Citation

Arbuckle, R., St. John, A., Davis, G., Cavender, G., Deane, D., & Keaton, B. The iron mule.

Chicago Style (17th ed.) Citation

Arbuckle, Roscoe, Al St. John, George Davis, Glen Cavender, Doris Deane, and Buster Keaton. The Iron Mule.

MLA (9th ed.) Citation

Arbuckle, Roscoe, et al. The Iron Mule.

Warning: These citations may not always be 100% accurate.